<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Feed_Reader
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Feed.php 23775 2011-03-01 17:25:24Z ralph $
 */

/**
 * @see Zend_Feed_Reader_Extension_FeedAbstract
 */
require_once 'Zend/Feed/Reader/Extension/FeedAbstract.php';

/**
 * @category   Zend
 * @package    Zend_Feed_Reader
 * @copyright  Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Feed_Reader_Extension_Podcast_Feed extends Zend_Feed_Reader_Extension_FeedAbstract {
	/**
	 * Get the entry author
	 *
	 * @return string
	 */
	public function getCastAuthor() {
		if (isset ( $this->_data ['author'] )) {
			return $this->_data ['author'];
		}
		
		$author = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:author)' );
		
		if (! $author) {
			$author = null;
		}
		
		$this->_data ['author'] = $author;
		
		return $this->_data ['author'];
	}
	
	/**
	 * Get the entry block
	 *
	 * @return string
	 */
	public function getBlock() {
		if (isset ( $this->_data ['block'] )) {
			return $this->_data ['block'];
		}
		
		$block = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:block)' );
		
		if (! $block) {
			$block = null;
		}
		
		$this->_data ['block'] = $block;
		
		return $this->_data ['block'];
	}
	
	/**
	 * Get the entry category
	 *
	 * @return string
	 */
	public function getCategories() {
		if (isset ( $this->_data ['categories'] )) {
			return $this->_data ['categories'];
		}
		
		$categoryList = $this->_xpath->query ( $this->getXpathPrefix () . '/itunes:category' );
		
		$categories = array ();
		
		if ($categoryList->length > 0) {
			foreach ( $categoryList as $node ) {
				$children = null;
				
				if ($node->childNodes->length > 0) {
					$children = array ();
					
					foreach ( $node->childNodes as $childNode ) {
						if (! ($childNode instanceof DOMText)) {
							$children [$childNode->getAttribute ( 'text' )] = null;
						}
					}
				}
				
				$categories [$node->getAttribute ( 'text' )] = $children;
			}
		}
		
		if (! $categories) {
			$categories = null;
		}
		
		$this->_data ['categories'] = $categories;
		
		return $this->_data ['categories'];
	}
	
	/**
	 * Get the entry explicit
	 *
	 * @return string
	 */
	public function getExplicit() {
		if (isset ( $this->_data ['explicit'] )) {
			return $this->_data ['explicit'];
		}
		
		$explicit = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:explicit)' );
		
		if (! $explicit) {
			$explicit = null;
		}
		
		$this->_data ['explicit'] = $explicit;
		
		return $this->_data ['explicit'];
	}
	
	/**
	 * Get the entry image
	 *
	 * @return string
	 */
	public function getImage() {
		if (isset ( $this->_data ['image'] )) {
			return $this->_data ['image'];
		}
		
		$image = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:image/@href)' );
		
		if (! $image) {
			$image = null;
		}
		
		$this->_data ['image'] = $image;
		
		return $this->_data ['image'];
	}
	
	/**
	 * Get the entry keywords
	 *
	 * @return string
	 */
	public function getKeywords() {
		if (isset ( $this->_data ['keywords'] )) {
			return $this->_data ['keywords'];
		}
		
		$keywords = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:keywords)' );
		
		if (! $keywords) {
			$keywords = null;
		}
		
		$this->_data ['keywords'] = $keywords;
		
		return $this->_data ['keywords'];
	}
	
	/**
	 * Get the entry's new feed url
	 *
	 * @return string
	 */
	public function getNewFeedUrl() {
		if (isset ( $this->_data ['new-feed-url'] )) {
			return $this->_data ['new-feed-url'];
		}
		
		$newFeedUrl = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:new-feed-url)' );
		
		if (! $newFeedUrl) {
			$newFeedUrl = null;
		}
		
		$this->_data ['new-feed-url'] = $newFeedUrl;
		
		return $this->_data ['new-feed-url'];
	}
	
	/**
	 * Get the entry owner
	 *
	 * @return string
	 */
	public function getOwner() {
		if (isset ( $this->_data ['owner'] )) {
			return $this->_data ['owner'];
		}
		
		$owner = null;
		
		$email = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:owner/itunes:email)' );
		$name = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:owner/itunes:name)' );
		
		if (! empty ( $email )) {
			$owner = $email . (empty ( $name ) ? '' : ' (' . $name . ')');
		} else if (! empty ( $name )) {
			$owner = $name;
		}
		
		if (! $owner) {
			$owner = null;
		}
		
		$this->_data ['owner'] = $owner;
		
		return $this->_data ['owner'];
	}
	
	/**
	 * Get the entry subtitle
	 *
	 * @return string
	 */
	public function getSubtitle() {
		if (isset ( $this->_data ['subtitle'] )) {
			return $this->_data ['subtitle'];
		}
		
		$subtitle = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:subtitle)' );
		
		if (! $subtitle) {
			$subtitle = null;
		}
		
		$this->_data ['subtitle'] = $subtitle;
		
		return $this->_data ['subtitle'];
	}
	
	/**
	 * Get the entry summary
	 *
	 * @return string
	 */
	public function getSummary() {
		if (isset ( $this->_data ['summary'] )) {
			return $this->_data ['summary'];
		}
		
		$summary = $this->_xpath->evaluate ( 'string(' . $this->getXpathPrefix () . '/itunes:summary)' );
		
		if (! $summary) {
			$summary = null;
		}
		
		$this->_data ['summary'] = $summary;
		
		return $this->_data ['summary'];
	}
	
	/**
	 * Register iTunes namespace
	 *
	 */
	protected function _registerNamespaces() {
		$this->_xpath->registerNamespace ( 'itunes', 'http://www.itunes.com/dtds/podcast-1.0.dtd' );
	}
}